Simplified Chinese Translation (#979)

* Simplified Chinese Translation

Hi Brandon and Stephen, I added a simplified Chinese translation.

* Update README.md

Author: sh3l6orrr

README.md

@@ -424,9 +424,10 @@ The following translations of this README have been contributed by members of th
 
 * [Arabic](https://gist.github.com/NorhanBoghdadi/1b98d55c02b683ddef7e05c2ebcccd47)
 * [French](https://gist.github.com/nikitamounier/0e93eb832cf389db12f9a69da030a2dc)
-* [Korean](https://gist.github.com/pilgwon/ea05e2207ab68bdd1f49dff97b293b17)
 * [Indonesian](https://gist.github.com/wendyliga/792ea9ac5cc887f59de70a9e39cc7343)
 * [Italian](https://gist.github.com/Bellaposa/5114e6d4d55fdb1388e8186886d48958)
+* [Korean](https://gist.github.com/pilgwon/ea05e2207ab68bdd1f49dff97b293b17)
+* [Simplified Chinese](https://gist.github.com/sh3l6orrr/10c8f7c634a892a9c37214f3211242ad)
 
 If you'd like to contribute a translation, please [open a PR](https://github.com/pointfreeco/swift-composable-architecture/edit/main/README.md) with a link to a [Gist](https://gist.github.com)!